Bugproof and odorproof sealing ring structure of a sinkhole screen

ABSTRACT

A bugproof and odorproof sealing ring structure of a sinkhole screen, including a base seat, a diaphragm and a gum ring. The base is a ring body having a screen section formed with multiple perforations and holders. An upper end and a lower end of the base seat are respectively formed with a stepped flange and a stepped skirt. The diaphragm is a gum-made thin disc having chucking bosses inserted in the holders to connect the diaphragm under the base seat with outer circumference of the diaphragm tightly attaching to the stepped skirt of the base seat. The inner circumference of the gum ring is formed with a stepped annular groove adapted to the stepped flange of the base seat, whereby the gum ring can be snugly fitted around the stepped flange of the base seat. The sealing ring can be directly placed on a conventional sinkhole screen to achieve a bugproof and odorproof effect.

BACKGROUND OF THE INVENTION

The present invention is related to a bugproof and odorproof sealing ring structure of a sinkhole screen, and more particularly to a sealing ring which can be inlaid in a conventional sinkhole screen to achieve a bugproof and odorproof effect.

Taiwanese Patent Publication No. 284567 discloses a valve-type bathroom sinkhole screen structure. Such resilient plastic valve-type sinkhole screen substantially can achieve a bugproof and odorproof effect. Such sinkhole screen structure includes a sinkhole cover and a resilient gum ring having multiple radially arranged acute triangular resilient valves. The gum ring is placed on a shoulder section of the sinkhole screen to isolate the sink from the bugs and stink in the draining pipe. However, it is known that pans, cookers, bowls and dishes are frequently washed in the sink with cold or hot water. Therefore, after a period of use, the resilient plastic valves of the gum ring tend to elastically fail and deform and become suspend from the circumference of the gum ring. Under such circumstance, the valves can no more shade the sinkhole and the gum ring will lose its bugproof and odorproof function.

SUMMARY OF THE INVENTION

It is therefore a primary object of the present invention to provide a bugproof and odorproof sealing ring structure of a sinkhole screen. The sealing ring structure has a disc-shaped diaphragm instead of the conventional valve-type gum ring. The diaphragm can truly achieve a bugproof and odorproof effect.

According to the above object, the bugproof and odorproof sealing ring structure of the sinkhole screen of the present invention includes:

a base seat which is a substantially ring-shaped body having a screen section, the screen section being formed with multiple perforations, the screen section being formed with holders, an upper end of the base seat being formed with a stepped flange, a lower end of the base seat being formed with a stepped skirt;

a diaphragm which is substantially a gum-made thin disc, the diaphragm having pinch button and chucking bosses respectively corresponding to the holders of the base seat, the chucking bosses being inserted in the holders to connect the diaphragm with the base seat with outer circumference of the diaphragm tightly attaching to the skirt of the base seat; and

a gum ring which is substantially a ring body, an inner circumference of the gum ring being formed with an annular groove adapted to the flange of the base seat, whereby the gum ring can be snugly fitted around the flange of the base seat.

After assembled, the sealing ring is directly placed on a shoulder section of the conventional sinkhole screen to achieve a bugproof and odorproof effect.

The present invention can be best understood through the following description and accompanying drawings wherein:

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective exploded view of a preferred embodiment of the present invention;

FIG. 2 is a perspective assembled view of the preferred embodiment of the present invention according to FIG. 1;

FIG. 3 is a sectional assembled view of the preferred embodiment of the present invention according to FIG. 1;

FIG. 4 is a sectional view according to FIG. 3, showing that the water is drained out through the gap between the diaphragm and the base seat of the present invention;

FIG. 5 is a longitudinal sectional view showing that the present invention is mounted on a conventional sinkhole screen;

FIG. 6 is a perspective exploded view of another preferred embodiment of the present invention; and

FIG. 7 is a perspective assembled view of the other preferred embodiment of the present invention according to FIG. 6.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Please refer to FIG. 1. The sealing ring structure of the sinkhole screen of the present invention includes a base seat 10, a diaphragm 20 and a gum ring 30. Referring to FIGS. 2 to 5, the base seat 10 is a substantially ring-shaped body integrally made of metal or plastic material. The central portion of the base seat 10 is formed with a screen section 11 having multiple perforations 12. The center and the circumference of the screen section 11 are respectively formed with holders 13, 14. The upper end of the base seat 1 is formed with a flange 15. The lower end of the base seat 1 is formed with a skirt 16. The flange 15 can be a stepped flange having a step 151. The skirt 16 can be a stepped skirt having a step 161. A lift ring 17 is disposed on the base seat 10 for lifting the sealing ring.

The diaphragm 20 is substantially a thin disc integrally made of elastic and weatherproof rubber or semisoft plastic material. The diaphragm 20 has chucking bosses 21, 22 respectively corresponding to the holders 13, 14 of the base seat 10. The chucking bosses 21, 22 are arranged at the center of the diaphragm 20 and near the circumference of the screen section 11. Therefore, a sufficient pulling force can be applied to the center and the circumference of the diaphragm 20.

The gum ring 30 is substantially a ring body integrally made of elastic and weatherproof rubber or semisoft plastic material. The inner circumference of the gum ring 30 is formed with an annular stepped groove 31 adapted to the stepped flange 15 of the base seat 10. Accordingly, the gum ring 30 can be snugly fixedly fitted around the stepped flange 15 of the base seat 10.

When assembled, the chucking boss 21 of the center of the diaphragm 20 is upward inserted into the central holder 13 of the base seat 10 from lower side thereof. Then, the circumferential chucking bosses 22 of the diaphragm 20 are upward plugged into the circumferential holders 14 of the base seat 10 from lower side thereof. Then the gum ring 30 is directly fitted on the stepped flange 15 of the base seat 10. Accordingly, the sealing ring of the sinkhole screen of the present invention can be quickly, easily and manually assembled.

Moreover, when installed, as shown in FIG. 5, the assembled sealing ring is directly inlaid in a sinkhole screen 4 on a stepped shoulder section 41 thereof instead of the conventional valve-type rubber tray. After installed, an original sinkhole cover 42 can be placed on the sinkhole screen 4 for reserving water.

Referring to FIGS. 6 and 7, a pinch button 212 can be disposed on upper end of the central chucking boss 21 of the diaphragm 20 to facilitate the installation thereof. The surface of the pinch button 212 is formed with at least one slipproof stripe 213, whereby a user can easily pinch the pinch button 212 with fingers and pull the diaphragm 20 to connect the diaphragm 20 with the base seat 10. In addition, the outer circumference of the diaphragm 20 is formed with an annular rib 23 for more tightly attaching to the stepped skirt 16 of the base seat 10. The outer circumference of the diaphragm 20 is slightly bent upward for enhancing the resiliently restoring force thereof. Moreover, the holders 13, 14 of the base seat 10 can be formed with trumpet-shaped holes 131, 141 tapered from lower side to upper side. Accordingly, the chucking sections 211, 221 of upper ends of the chucking bosses 21, 22 can easily upward pass through the holders 13, 14.

Referring to FIG. 3, in a not drained state, the outer circumference of the diaphragm 20 totally tightly attaches to the stepped skirt 16 of lower side of the base seat 10 to achieve an airtight effect. Therefore, the stink and insects are prevented from entering the kitchen or the room. When a sufficient amount of water falls into the base seat 10, the weight of the water will depress those parts of the outer circumference of the diaphragm 20 distal from the chucking bosses 21, 22 inserted in the holders 13, 14. Therefore, the outer circumference of the diaphragm 20 is partially forced downward and separated from the stepped skirt 16 of the base seat 10 as shown in FIG. 4. At this time, a gap T is defined between the outer circumference of the diaphragm 20 and the stepped skirt 16 and the water can pass through the perforations 12 of the screen section 11 of the base seat 10 and the gap T to be immediately drained outdoors from a draining pipe. When the water on upper side of the diaphragm 20 is fully drained out and no water further flows into the base seat 10, the circumference of the diaphragm 20 restores to its home position to airtight attach to the stepped skirt 16 by means of its own elasticity and the contraction force of the water as well as the adhesion to the stepped skirt 16.

According to the above, when drained, the water only needs to overcome the minor resilient force of the diaphragm 20 to pass through the gap. In addition, by means of the diaphragm's own elasticity and the contraction force of the water, the diaphragm 20 can easily restore to the airtight state.

The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiments can be made without departing from the spirit of the present invention. 

1. A bugproof and odorproof sealing ring structure of a sinkhole screen, comprising: a base seat which is a substantially ring-shaped body having a screen section, the screen section being formed with multiple perforations, a central portion and a circumferential portion of the screen section being respectively formed with holders, an upper end of the base seat being formed with a flange, a lower end of the base seat being formed with a skirt; a diaphragm which is substantially a gum-made thin disc, the diaphragm having chucking bosses respectively corresponding to the holders of the base seat, the chucking bosses being inserted in the holders to connect the diaphragm with the base seat with outer circumference of the diaphragm tightly attaching to the skirt of the base seat; and a gum ring which is substantially a ring body, an inner circumference of the gum ring being formed with an annular groove adapted to the flange of the base seat, whereby the gum ring can be snugly fitted around the flange of the base seat, the sealing ring being directly placed on a shoulder section of the sinkhole screen to achieve a bugproof and odorproof effect.
 2. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 1, wherein the holders of the base seat are formed with trumpet-shaped holes tapered from lower side to upper side.
 3. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 1, wherein a pinch button is disposed on a central chucking boss of the diaphragm.
 4. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 2, wherein a pinch button is disposed on a central chucking boss of the diaphragm.
 5. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 3, wherein a surface of the pinch button is formed with slipproof stripes.
 6. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 1, wherein an annular rib is formed along outer circumference of the diaphragm.
 7. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 2, wherein an annular rib is formed along outer circumference of the diaphragm.
 8. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 3, wherein an annular rib is formed along outer circumference of the diaphragm.
 9. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 4, wherein an annular rib is formed along outer circumference of the diaphragm.
 10. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 1, wherein a lift ring is disposed on the base seat.
 11. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 2, wherein a lift ring is disposed on the base seat.
 12. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 6, wherein a lift ring is disposed on the base seat.
 13. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 7, wherein a lift ring is disposed on the base seat.
 14. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 1, wherein the skirt of the base seat is a stepped skirt, whereby the outer circumference of the diaphragm can be snugly attach to the stepped skirt.
 15. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 2, wherein the skirt of the base seat is a stepped skirt, whereby the outer circumference of the diaphragm can be snugly attach to the stepped skirt.
 16. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 3, wherein the skirt of the base seat is a stepped skirt, whereby the outer circumference of the diaphragm can be snugly attach to the stepped skirt.
 17. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 4, wherein the skirt of the base seat is a stepped skirt, whereby the outer circumference of the diaphragm can be snugly attach to the stepped skirt.
 18. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 6, wherein the skirt of the base seat is a stepped skirt, whereby the outer circumference of the diaphragm can be snugly attach to the stepped skirt.
 19. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 7, wherein the skirt of the base seat is a stepped skirt, whereby the outer circumference of the diaphragm can be snugly attach to the stepped skirt.
 20. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 10, wherein the skirt of the base seat is a stepped skirt, whereby the outer circumference of the diaphragm can be snugly attach to the stepped skirt.
 21. The bugproof and odorproof sealing ring structure of the sinkhole screen as claimed in claim 11, wherein the skirt of the base seat is a stepped skirt, whereby the outer circumference of the diaphragm can be snugly attach to the stepped skirt. 